Where does Europe end?

Where does Europe end?

That's a bit of a tricky one. Europe isn't a continent on its own but is attached to the western end of Asia. It is usually said to end at the Ural and Caucasus Mountains in Russia. Europe is the second smallest continent (only Australia is smaller). It occupies just 7 per cent of the Earth's surface, but contains 25 per cent of the world's population. There are 47 countries.